Power distribution management system and CT imaging equipment

Abstract

The utility model relates to a power distribution management system and CT imaging equipment thereof. The power distribution management system is arranged on a rack of the CT imaging equipment; the power distribution management system comprises a rotation driving unit which is arranged on the stator side of the rack and used for driving the rotor side of the rack to rotate; the power supply and distribution module is arranged on the stator side of the rack and used for supplying and distributing power to the CT imaging equipment; the high-voltage module is arranged on the rotor side of the rack, the high-voltage module comprises an electric energy storage unit and an inversion and high-voltage multiplication unit, and the electric energy storage unit is arranged in the high-voltage module. The electric energy storage unit is integrally designed in the high-voltage module component on the rotor in the CT rack, so that high integration of the internal components of the CT is realized, the whole machine is compact and miniaturized, the requirement on a site is reduced, and the system cost is reduced.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a power distribution management system and a CT imaging device incorporating the power distribution management system. Background Technology

[0002] With the continuous development of medical technology, CT imaging equipment, as an important tool for modern medical diagnosis, plays an increasingly important role in clinical applications. CT imaging equipment typically consists of components such as a gantry, X-ray source, detector, data acquisition system, and reconstruction system. The gantry is divided into a stator side and a rotor side, with the rotor side rotating at high speed during scanning to acquire projection data from different angles.

[0003] However, existing power supply systems for CT imaging equipment still have some technical problems. Traditional CT equipment requires additional power distribution cabinets, occupying a large amount of space. The rotor side is usually equipped with a bulky and expensive rectifier power distribution unit, increasing the overall size and cost of the equipment. Multiple different types of power supply circuits are required between the rotor side and the stator side, resulting in a complex structure and limited reliability.

[0004] Therefore, there is an urgent need for a power distribution management system that can optimize the power supply and distribution structure of CT imaging equipment, reduce equipment size, lower costs, improve power supply efficiency and reliability, reduce dependence on external power sources, and enhance the ease of use of the equipment. Utility Model Content

[0005] The technical problem to be solved by this application is to provide a CT device and its power supply and distribution structure that is compact, highly integrated and has high power supply efficiency, in response to the shortcomings of traditional CT equipment, such as the need for additional power distribution cabinets occupying a large space, a bulky and high-cost rectifier and power distribution unit on the rotor side, the need for multiple different types of power supply circuits between the rotor side and the stator side, the high demand for external power supply capacity, and the low convenience of use due to reliance on external power supply.

[0006] The technical solution adopted by this application to solve its technical problem is as follows: a power distribution management system and a CT imaging device are provided. The power distribution management system is installed on the frame of the CT imaging device. The power distribution management system includes: a rotation drive unit, installed on the stator side of the frame, for driving the rotor side of the frame to rotate; a power supply and distribution module, installed on the stator side of the frame, for supplying power to the CT imaging device; and a high-voltage module, installed on the rotor side of the frame. The high-voltage module includes an energy storage unit and an inverter and high-voltage multiplier unit, wherein the energy storage unit is built into the high-voltage module.

[0007] Preferably, the energy storage unit is located in front of the inverter and high voltage multiplier unit, so that the energy storage unit can both obtain electrical energy from the DC bus to supply power to the inverter and high voltage multiplier unit and output electrical energy to the DC bus.

[0008] Preferably, the energy storage unit includes a switching circuit section and an energy storage section, both of which are controlled by the controller unit of the high-voltage module.

[0009] Preferably, the power distribution management system further includes a second power conversion unit, and the power supply and distribution module includes a first power conversion unit and a transformer; the first power conversion unit of the power supply and distribution module transmits electrical energy to the high-voltage module through the contact terminals, and when the frame rotor side rotates, the first power conversion unit of the power supply and distribution module also supplies power to the second power conversion unit through the contact terminals.

[0010] Preferably, the power supply and distribution module transmits electrical energy to the rotary drive unit and stator-side auxiliary components through the transformer.

[0011] Preferably, the power distribution management system further includes a second power converter, and the power supply and distribution module includes a first power conversion unit; the first power conversion unit of the power supply and distribution module transmits electrical energy to the high-voltage module and the second power conversion unit through a contact power loop.

[0012] Preferably, the first power conversion unit of the power supply and distribution module transmits electrical energy to the rotary drive unit and the stator-side auxiliary components via a DC bus.

[0013] Preferably, the contact power ring is a slip ring for bidirectional power transmission.

[0014] Preferably, the CT imaging device is a single-source CT imaging device or a multi-source CT imaging device.

[0015] This application provides a power distribution management system and a CT imaging device thereof. The power distribution management system is mounted on the gantry of the CT imaging device. The power distribution management system includes: a rotation drive unit located on the stator side of the gantry for driving the rotor side of the gantry to rotate; a power supply and distribution module located on the stator side of the gantry for supplying power to the CT imaging device; and a high-voltage module located on the rotor side of the gantry. The high-voltage module includes an energy storage unit and an inverter and high-voltage multiplier unit, with the energy storage unit built into the high-voltage module. By integrating the energy storage unit into the high-voltage module component on the rotor inside the CT gantry, a high degree of integration of internal CT components and a compact, miniaturized overall device are achieved, reducing space requirements and system costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a power distribution management system according to one embodiment of this application;

[0018] Figure 2A This is a schematic diagram of the high-voltage module in one embodiment of this application;

[0019] Figure 2B This is a schematic diagram of the high-voltage module in another embodiment of this application;

[0020] Figure 3 This is a power distribution management system in another embodiment of this application;

[0021] Figure 4 This is a power distribution management system in another embodiment of this application;

[0022] Reference numerals: Rotary drive unit 11, power supply and distribution module 12, high voltage module 13, energy storage unit 131, inverter and high voltage multiplier unit 132, switching circuit section 1311, energy storage section 1312, first power conversion unit 121, transformer 122. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0029] CT (Computed Tomography) imaging equipment typically uses X-rays to penetrate human tissue, where detectors receive the attenuated signals, and data acquisition and reconstruction algorithms generate tomographic images. Its core components include: a gantry, consisting of a stator (fixed side) and a rotor (rotating side), with the rotor carrying the X-ray source and detector rotating at high speed (typically 60-240 rpm); an X-ray source, driven by a high-voltage generator, producing kilovolt-level (80-150 kV) high voltage to excite the X-ray tube to emit fan-shaped or cone-shaped X-ray beams; a detector, composed of thousands of detector elements, converting X-ray photons into electrical signals, with sensitivity directly affecting the image signal-to-noise ratio; a data acquisition system (DAS) that acquires detector signals at high speed and performs analog-to-digital conversion (sampling rate ≥ 1 MHz); and a reconstruction system that generates three-dimensional images based on back-projection algorithms (such as filtered back-projection or iterative reconstruction), requiring sub-millimeter level computational accuracy.

[0030] See Figure 1 , Figure 1 A schematic diagram of a power distribution management system according to an embodiment of this application is shown. The power distribution management system is installed on the rack of a CT imaging equipment. The power distribution management system includes a rotary drive unit 11, a power supply and distribution module 12, and a high-voltage module 13. The rotary drive unit 11 is located on the stator side of the rack and is used to drive the rotor side of the rack to rotate. The power supply and distribution module 12 is located on the stator side of the rack and is used to supply and distribute power to the CT imaging equipment. The high-voltage module 13 is located on the rotor side of the rack and includes an energy storage unit 131 and an inverter and high-voltage multiplier unit 132. The energy storage unit 131 is built into the high-voltage module 13.

[0031] CT imaging equipment can be single-source or multi-source. Multi-source CT imaging equipment includes dual-source, tri-source, or more sources. A single-source CT imaging device contains a single X-ray source and detector array, while a multi-source CT imaging device contains multiple independent X-ray sources and detector arrays.

[0032] In this embodiment, the rotary drive unit 11 is disposed on the stator side of the gantry and is used to drive the gantry rotor to rotate. The rotary drive unit adopts a high-efficiency permanent magnet synchronous motor, which can provide stable rotational power and ensure that the gantry rotor of the CT imaging equipment can rotate smoothly during scanning. The rated power of the rotary drive unit is 5 kilowatts, and the maximum speed can reach 120 revolutions per minute, which can meet the high-speed scanning requirements of the CT imaging equipment. The rotary drive unit is connected to the gantry rotor through a precision mechanical transmission structure to achieve precise control of the rotor.

[0033] In this embodiment, the power supply and distribution module 12 is located on the stator side of the frame and is used to supply power to the CT imaging equipment. The power supply and distribution module includes a power input interface, a power management circuit, and multiple output interfaces. The power input interface connects to an external AC power source, the power management circuit processes and distributes the input power, and the multiple output interfaces provide the necessary power to various components of the CT imaging equipment. The input voltage range of the power supply and distribution module is 220V±10%, the frequency is 50Hz, and the maximum input power is 15 kW. The power supply and distribution module adopts a modular design for easy maintenance and replacement.

[0034] In this embodiment, by integrating an electric energy storage unit into the high-voltage module component inside the rotor within the CT gantry, the internal components of the CT are highly integrated, and the entire machine is compact / miniaturized. This reduces the requirements for space, saves the rectifier and power distribution unit located on the rotor side in the traditional CT power supply and distribution structure, and reduces system costs.

[0035] In one embodiment, the high-voltage module 13 is disposed on the rotor side of the frame. The high-voltage module includes an energy storage unit 131 and an inverter and high-voltage multiplier unit 132, with the energy storage unit 132 built into the high-voltage module 13. (See also...) Figure 2AThe diagram illustrates the structure of a high-voltage module in one embodiment of this application. The main function of the high-voltage module is to provide a stable high-voltage power supply for the X-ray tube. The output voltage range of the high-voltage module is 40kV to 140kV, and the maximum output power is 100kW, which can meet the power supply requirements of the X-ray tube under different scanning conditions. The inverter and high-voltage multiplier unit 132 includes an inverter section and a high-voltage multiplier section. The inverter section receives the electrical power from the medium-voltage DC bus of the preceding MVDC circuit and converts the DC voltage into a high-frequency AC voltage as the output through a full-bridge power switching transistor (not limited to the IGBT circuit shown in the figure). The high-voltage multiplier section receives the high-frequency AC voltage from the preceding inverter section, and then raises the high-frequency AC voltage to approximately several kilovolts (e.g., 6kV) through a step-up transformer. After passing through the multiplier circuit in the high-voltage multiplier, it finally generates high voltage at the cathode and anode (tens of kV high-voltage DC in the figure) to be supplied to the X-ray tube. An electric energy storage unit (EASU) is a device or system that stores electrical energy in some form and releases it when needed. It is a crucial component of modern energy systems, playing a key role, particularly in renewable energy integration, grid peak shaving, and electric vehicles. ESUs include electrochemical energy storage and electromagnetic energy storage. Electrochemical energy storage includes lithium-ion batteries and solid-state batteries, while electromagnetic energy storage includes supercapacitors, which are also a type of power density energy storage unit. Power density energy storage units utilize specially designed supercapacitor arrays, achieving a power density of 10 kW / kg and an energy density of 5 Wh / kg. These units have a charge / discharge efficiency greater than 95%, a cycle life exceeding 1 million cycles, and an operating temperature range of -20°C to 60°C. Power density energy storage units can provide high power output in short periods, meeting the instantaneous high-power demands of X-ray tubes.

[0036] In one embodiment, the energy storage unit 131 is positioned before the inverter and high-voltage multiplier unit 132, enabling the energy storage unit to both draw power from the DC bus to supply the inverter and high-voltage multiplier unit and output power to the DC bus. The energy storage unit can utilize high-performance supercapacitors as energy storage elements, featuring fast charging and discharging speeds and long cycle life. The energy storage unit has a storage capacity of 1000 joules, a maximum charging voltage of 800V, a charging time of less than 500 milliseconds, and a discharging time that can be adjusted according to scanning requirements, typically ranging from 100 milliseconds to 2 seconds.

[0037] The energy storage unit comprises a switching circuit section 1311 and an energy storage unit 1312, both controlled by the controller unit of the high-voltage module. The switching circuit section consists of multiple IGBT power switches used to control the flow and magnitude of electrical energy. The energy storage unit consists of multiple supercapacitors connected in parallel, providing high energy density and high discharge power. The controller unit employs a digital signal processor to achieve precise control of the switching circuit and the energy storage unit, ensuring efficient energy transmission and utilization.

[0038] For the power supply of multi-source CT system equipment, the high-voltage module also includes an energy storage unit and an inverter and high-voltage multiplier unit; the inverter and high-voltage multiplier unit includes multiple sub-units, each of which is connected to the energy storage unit.

[0039] Taking dual-source CT as an example, see Figure 2B This is a schematic diagram of the high-voltage module in another embodiment. In this embodiment, the high-voltage module includes an energy storage unit and an inverter and high-voltage multiplier unit. The inverter and high-voltage multiplier unit includes a first subunit and a second subunit. The input terminals of both the first and second subunits are connected to the medium-voltage DC MVDC bus circuit inside the energy storage unit. Under the control of the controller unit, the switches of each circuit of the energy storage unit perform timely switching operations, so that the two X-ray sources at the back end can obtain the required kV and mA power from the corresponding two HVDC high-voltage DC output ports of the inverter and high-voltage multiplier unit to realize X-ray emission. The CT equipment rack achieves an extremely compact, highly integrated component design and layout. The HVGAssembly high-voltage module only needs to be packaged within a single structure to provide the required power for two or more sets of X-ray tubes and detectors.

[0040] For the control of the switching circuit in the energy storage unit of a multi-source CT scanner, the controller unit can control the switching circuit to operate four switches according to the scanning and placement requirements of the medical equipment, realizing the inflow and outflow of energy to the energy storage unit. For example, before the first X-ray source requires high power input, the switch inside Port2 is controlled to close (controlled by the controller unit). At this time, the medium-voltage DC bus of the MVDC bus and / or the energy storage device (whose switch is closed) provides high-power pulse power to the first sub-unit of the inverter and high-voltage multiplier unit. Before both the first and second X-ray sources require high power input, the switches inside Port2 and Port3 are controlled to close. At this time, the medium-voltage DC bus of the MVDC bus and / or the energy storage device (whose switch is closed) provides high-power pulse power to the first and second sub-units of the inverter and high-voltage multiplier unit. The medium-voltage DC bus of the MVDC bus preceding Port 1 supports bidirectional energy flow. That is, power can be input into Port 1 (e.g., when the CT rotor is not rotating, the energy storage device is charged by the power conversion unit on the CT stator side through the power loop), or it can be output in reverse from the energy storage device to the preceding MVDC bus of the energy storage device via Port 1 (e.g., when the CT rotor is rotating), thus simultaneously powering other components on the CT rotor.

[0041] In one embodiment, the power distribution management system further includes a second power conversion unit 14, and the power supply and distribution module includes a first power conversion unit 121 and a transformer 122. The first power conversion unit of the power supply and distribution module transmits electrical energy to the high-voltage module through contact segments. When the frame rotor rotates, the first power conversion unit of the power supply and distribution module also transmits electrical energy to the second power conversion unit through contact terminals. The first power conversion unit converts AC power to DC power, with an output voltage of 600V and a maximum output current of 25A. The contact segments are made of a special alloy material, which has good conductivity and wear resistance, and can maintain stable power transmission even when the frame rotates at high speed.

[0042] The power supply and distribution module transmits electrical energy to the rotating drive unit and stator-side auxiliary components via a transformer. The transformer is a high-frequency transformer with an operating frequency of 20kHz, a transformation ratio of 10:1, an output voltage of 60V, and a maximum output power of 6 kW. The stator-side auxiliary components include control circuits, a cooling system, and a communication module. These components operate at 24V or 12V, with a stable power supply provided by the power supply and distribution module.

[0043] Specifically, such as Figure 3As shown, another embodiment of the power distribution management system is presented. A power supply and distribution module, a rotary drive unit, and stator-side auxiliary components are arranged on the stator side of the rack. The power supply and distribution module includes a first power conversion unit and a transformer. A high-voltage module, a second power conversion unit, an X-ray source, an image data acquisition and remodeling unit, and rotor-side auxiliary components are arranged on the rotor side. The first power conversion unit of the power supply and distribution module is connected to the high-voltage module and the second power conversion unit via a medium-voltage DC (MVDC) and contact terminals. The high-voltage module is connected to the X-ray source via a high-voltage DC (HVDC). The second power conversion unit is connected to the image data acquisition and remodeling unit and the rotor-side auxiliary components via a low-voltage DC (LVDC). The power supply and distribution module is connected to the rotary drive unit, the stator-side auxiliary components, the control console components outside the rack, and the patient support bed via the transformer.

[0044] Specifically, the external power supply is connected to the transformer of the power supply and distribution module. The external power supply defaults to a three-phase 380Vac AC voltage input to the CT system power supply terminals, which are then input into the power supply and distribution module. The three-phase 380Vac AC voltage is connected to the input terminal of the first power conversion unit, which converts the three-phase AC voltage into a medium-voltage DC MVDC output (e.g., 1000Vdc). This output is then transmitted to the MVDC bus on the CT rotor side via the contact terminal pairs between the CT rotor and stator sides. The MVDC bus on the rotor side connects to the energy storage unit inside the high-voltage module and also to the second power conversion unit. The energy storage unit can obtain DC power from the MVDC bus to power the inverter and high voltage multiplier unit to provide power for the X-ray source. The energy storage unit can also output power to the MVDC bus. When the CT rotor is rotating, the energy storage unit is also used to provide power to the second power conversion unit to convert it into low voltage DC LVDC such as 150Vdc, so as to continuously power the subsequent image data acquisition and remodeling group and various auxiliary components on the rotor side, ensuring the operation of the CT.

[0045] After the initial three-phase 380Vac AC voltage is input to the power distribution module, another circuit is an AC circuit. After passing through a transformer (such as an isolation transformer), a three-phase 400Vac AC voltage is output. The subsequent stage is designed with a rotary drive unit that requires three-phase power supply (three-phase 400Vac). At the same time, it also provides single-phase power supply (single-phase 230Vac) to multiple stator-side auxiliary components, console components other than the CT gantry, patient support beds, etc.

[0046] In one embodiment, the power distribution management system further includes a second power converter 14, and the power distribution module includes a first power conversion unit 121. The first power conversion unit of the power distribution module transmits electrical energy to the high-voltage module and the second power conversion unit through a contact-type power ring 15. The contact-type power ring adopts a multi-ring design, including a power ring, a signal ring, and a grounding ring, and can transmit electrical energy and signals simultaneously. The contact-type power ring has a maximum transmission power of 120 kW, an operating voltage of 600 V, and a contact resistance of less than 5 milliohms, ensuring high efficiency and stability of power transmission.

[0047] like Figure 4 As shown, another embodiment of the power distribution management system is presented. A power supply and distribution module, a rotary drive unit, and stator-side auxiliary components are mounted on the stator side of the rack. The power supply and distribution module includes a first power conversion unit, while a high-voltage module, a second power conversion unit, an X-ray source, an image data acquisition and remodeling unit, and rotor-side auxiliary components are mounted on the rotor side. The first power conversion unit of the power supply and distribution module is connected to the high-voltage module and the second power conversion unit via an MVDC converter and a contact-type power loop. The high-voltage module is connected to the X-ray source via a high-voltage DC (HVDC). The second power conversion unit is connected to the image data acquisition and remodeling unit and the rotor-side auxiliary components via a low-voltage DC (LVDC). The power supply and distribution module directly supplies power to the rotary drive unit, stator-side auxiliary components, and the control console and patient support bed outside the rack via a medium-voltage DC (MVDC) converter and their respective switching power supplies.

[0048] Specifically, the external power supply defaults to a three-phase 380Vac AC voltage input to the CT system power supply terminals, which is then input to the power distribution module. The three-phase 380Vac AC is connected to the input of the first power conversion unit, which converts the three-phase AC voltage into a medium-voltage DC MVDC output (e.g., 1000Vdc). The stator and rotor sides share a DC bus, and a contact-type power loop supports bidirectional power flow (electrical power can flow in reverse from the rotor-side energy storage unit to the rotor side, thus providing power to the stator side when the CT is disconnected from the external power grid). With the stator side sharing a DC bus, an MVDC-to-LVDC switching power supply module needs to be added before each component load.

[0049] The first power conversion unit of the power supply and distribution module transmits electrical energy to the rotary drive unit and stator-side auxiliary components via a DC bus. The DC bus adopts a copper busbar structure with a cross-sectional area of ​​100 square millimeters, a maximum current carrying capacity of 200A, and a resistivity of less than 0.02 ohms / meter. The DC bus has multiple branch interfaces for connecting different electrical devices, and each interface is equipped with an overcurrent protection device to ensure the safe operation of the system.

[0050] The contact-type power ring is a slip ring for bidirectional power transmission. The slip ring employs a precious metal alloy brush and conductive ring design, featuring low noise, low wear, and high reliability. The slip ring can rotate at speeds up to 150 rpm and has a service life exceeding 10,000 hours. The bidirectional power transmission function allows energy to flow freely between the stator and rotor sides, improving the system's energy utilization efficiency.

[0051] In one embodiment, a CT imaging device is also included, comprising the power distribution management system of Embodiment 1, as well as a gantry, an X-ray source, a detector, a data acquisition system, and a reconstruction system.

[0052] The frame consists of a stator and a rotor. The stator is fixed, while the rotor can rotate around a central axis. The frame is made of high-strength alloy material, providing excellent rigidity and stability. The frame has a diameter of 80 cm, a height of 60 cm, and weighs 500 kg. An internal precision bearing system ensures smooth rotation of the rotor.

[0053] The X-ray source, consisting of an X-ray tube and a collimator, is mounted on the rotor section of the frame. The X-ray tube employs a rotating anode design, with a maximum tube voltage of 140kV, a maximum tube current of 500mA, and a focal spot size of 0.5mm × 0.5mm. The collimator controls the shape and size of the X-ray beam, with an adjustable range from 1mm to 40mm. The X-ray source is powered by a high-voltage module, ensuring stable X-ray output.

[0054] The detector is mounted on the rotor section of the frame, opposite the X-ray source. It employs a multi-row solid-state detector design with 1000×64 detector units, each unit measuring 0.6mm×0.6mm. The detector has a sensitivity of 85% and a dynamic range of 1000:1, enabling it to accurately detect changes in X-ray intensity passing through the human body.

[0055] The data acquisition system connects to the detector and is used to acquire and process the signals output by the detector. The data acquisition system includes a preamplifier, an analog-to-digital converter (ADC), and a data processing unit. The preamplifier has a gain of 20dB and a bandwidth of 1MHz. The ADC has a sampling rate of 10MHz and a resolution of 16 bits. The data processing unit uses a high-performance DSP chip with a processing speed of 1GFLOPS.

[0056] The reconstruction system connects to the data acquisition system and is used to reconstruct CT images based on the acquired data. The reconstruction system utilizes a high-performance computer equipped with a multi-core CPU and GPU accelerator card. The reconstruction algorithm employs filtered back-projection and iterative reconstruction methods, achieving a reconstruction speed of 20 frames per second. The reconstructed image resolution is 512×512 pixels, with a pixel size of 0.5mm×0.5mm.

[0057] The power distribution management system of the CT imaging equipment provides a stable power supply to all components, ensuring the normal operation of the equipment. The rotary drive unit drives the gantry rotor to rotate, realizing the circular scanning of the X-ray source and detector. The power supply and distribution module provides power to the entire system, and the high-voltage module provides high-voltage power to the X-ray tube. The energy storage unit provides additional power support when the X-ray tube requires high power, ensuring the stability of image quality.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A power distribution management system, wherein the power distribution management system is installed on the rack of a CT imaging equipment, characterized in that, The power distribution management system includes: A rotary drive unit (11) is disposed on the stator side of the frame and is used to drive the rotor side of the frame to rotate; A power supply and distribution module (12) is installed on the stator side of the frame and is used to supply power to the CT imaging equipment; A high-voltage module (13) is disposed on the rotor side of the frame. The high-voltage module (13) includes an energy storage unit (131) and an inverter and high-voltage multiplier unit (132). The energy storage unit (131) is built into the high-voltage module (13).

2. The power distribution management system according to claim 1, characterized in that, The energy storage unit (131) is located in front of the inverter and high voltage multiplier unit (132), so that the energy storage unit (131) can obtain electrical energy from the DC bus to supply power to the inverter and high voltage multiplier unit (132), and can also transmit electrical energy to the DC bus.

3. The power distribution management system according to claim 1, characterized in that, The energy storage unit (131) includes a switching circuit section (1311) and an energy storage section (1312), both of which are controlled by the controller unit of the high voltage module (13).

4. The power distribution management system according to claim 1, characterized in that, The power distribution management system further includes a second power conversion unit (14), and the power supply and distribution module (12) includes a first power conversion unit (121) and a transformer (122). The first power conversion unit (121) of the power supply and distribution module (12) transmits electrical energy to the high voltage module (13) through the contact terminal. When the frame rotor side rotates, the first power conversion unit (121) of the power supply and distribution module (12) also transmits electrical energy to the second power conversion unit (14) through the contact terminal.

5. The power distribution management system according to claim 4, characterized in that, The power supply module (12) transmits electrical energy to the rotary drive unit (11) and stator-side auxiliary components through the transformer (122).

6. The power distribution management system according to claim 1, characterized in that, The power distribution management system further includes a second power conversion unit (14), and the power supply and distribution module (12) includes a first power conversion unit (121). The first power conversion unit (121) of the power supply and distribution module (12) transmits electrical energy to the high voltage module (13) and the second power conversion unit (14) through a contact power loop.

7. The power distribution management system according to claim 6, characterized in that, The first power conversion unit (121) of the power supply and distribution module (12) transmits electrical energy to the rotary drive unit (11) and stator-side auxiliary components through the DC bus.

8. The power distribution management system according to claim 6, characterized in that, The contact-type power ring is a slip ring for bidirectional power transmission.

9. The power distribution management system according to claim 1, characterized in that, The CT imaging equipment is either a single-source CT imaging equipment or a multi-source CT imaging equipment.

10. A CT imaging device, comprising: The power distribution management system as described in any one of claims 1-9, as well as the rack, X-ray source, detector, data acquisition system, and reconstruction system.

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